Two areas of chalk downland with some woodland on the edge of the Chilterns, one each side of the M40 motorway cutting. Car park for Beacon Hill (north side) at SU732966 and for Bald Hill (south side) at SU727958, both signposted off the unclassified road to Christmas Common from the A40 west of Stokenchurch. Two miles W of Stokenchurch. Managed by Natural England. Species seen here:

Aston Upthorpe Downs is a chalk downland site with open access land. There's a sign with a map at the entrance to Juniper Valley. Park by the grain dryer at SU550844 on unclassified road off the A417 south of Aston Upthorpe village. The site was designated a SSSI in 1953 and is now within the North Wessex Downs AONB. 3½ miles SE of Didcot. Species seen here:

A large mixed woodland on the Wilts/Hants border. More than 35 butterfly species are recorded there regularly, including every woodland species resident in southern England. There are also some small ponds which attract Odonata including the Downy Emerald. Managed by the Bentley Wood Charitable Trust. Species seen here:

Ancient woodland. Incorporates Oakley, Shabbington and York's Woods and Hell Coppice. Car park at SP610116 off the unclassified road from Oakley to Stanton St John. Seven miles NE of Oxford. Managed by the Forestry Commission. Species seen here:

Chimney Meadows is the Berks, Bucks & Oxon Wildlife Trust's largest nature reserve and its fields are part of an ancient landscape, created by the Thames and shaped by centuries of farming. Nine miles west of Oxford. A BBOWT reserve. Species seen here:

Cothill NNR is part of the much larger Cothill Fen Special Area of Conservation (SAC), one of the most species-rich lowland calcareous fen systems in the UK. Three miles NE of Abingdon. Managed by Natural England. Species seen here:

The Oolitic limestone grassland on the upper slopes of this SSSI is the most important habitat of this site, although scrub, woodland and neutral grassland add to the diversity. A Gloucestershire Wildlife Trust site. Species seen here:

The reserve lies between the town of Dersingham and the village of Wolferton, two km west of Sandringham. The A149 forms the site's eastern boundary, and a disused railway line between Dersingham and Wolferton marks the reserve's western boundary. Acid valley mire is found over much of the low-lying parts of the reserve where the ground is waterlogged for most of the year. There are also areas of heath and woodland. Managed by Natural England. Species seen here:

Two large reservoirs near the Thames to the west of Oxford. Several areas of wetland have been established between the reservoirs and the river. Five miles W of Oxford. A Thames Water site. Species seen here:

This is an area of riverbank where the railway bridge crosses the River Thames about 1 mile south of Goring. The bridgework is a good place to see Common Clubtails emerge. The river is managed by Thames Water. Species seen here:

Hatchet Pond is the largest body of water in the New Forest. Created in the 18th Centuary to provide power for an iron mill, the pond today provides valuable habitats for wildlife. Managed by the Forestry Commission. Species seen here:

A warm Chilterns slope, with woodland and grassland. The wild flowers that grow here attract butterflies such as the marbled white, white-letter hairstreak and the silver-washed fritillary. A variety of bees also find nectar in the flowers, and over 400 species of moth have been recorded, including Blotched Emerald and Striped Lychnis. Owned by Forest Enterprise and managed by BBOWT. Species seen here:

How Hill National Nature Reserve forms a large area of established fen within the River Ant valley, north of Ludham Bridge. It is remarkable for its variety of Broads habitats. The reserve is of national and international importance for nature conservation, supporting a wide range of wetland plant communities and associated birds, insects and animal species. Managed by the Norfolk Broads Authority. Species seen here:

This SSSI is described by Natural England as 'dwarf scrub heath - lowland' and covers 90 hectares. Lowland heath is a rare and declining habitat, and is very rich in specialised wildlife. The vegetation is largely open heathland comprising common gorse, western gorse, heather, bell heather and bracken. The site is managed by two bodies of Trustees. Species seen here:

The reserve covers nearly 500 acres between the mouth of the Lymington river and the village of Keyhaven. The adjacent mudflats and salt marshes outside the seawall are leased by Hampshire and Isle of Wight Wildlife Trust and form their Keyhaven and Pennington Marshes Reserve. Managed by Hampshire County Council. Species seen here:

This 35 hectare (86.5 acre) former gravel extraction site consists of extensive woodland, grassland and several lakes located in a narrow valley just outside Aldermaston. Privately owned and managed in agreement with West Berks council. Species seen here:

Thrupp, Bullfield and Orchard Lakes are flooded former gravel pit which are home to a wide variety of wildlife, including butterflies and dragonflies. Thrupp Lake is managed by the Earth Trust. Species seen here:

Part of the Lower Windrush Valley Project. The Lower Windrush Valley covers 28 square kilometres of West Oxfordshire, incorporating the floodplain of the River Windrush from Witney to where it joins the River Thames at Newbridge. This site is owned by Oxfordshire County Council. Species seen here:

An area of deciduous woodland with some heath. No car park. Access via bridleway that leaves the B4027 at SP563102, between Stanton St John and Islip. 3½ miles NE of Oxford. A BBOWT reserve. Species seen here:

Tophill Low Nature Reserve is an active Yorkshire Water Treatment Works built in 1959. It formally opened as a Nature Reserve in 1993 and features 12 hides spread across a 300 acre site that flanks the River Hull. Two reservoirs dominate the reserve but there are also areas of marshes, ponds, woodland and grassland. A Yorkshire Water site. Species seen here:

A mosaic of short rabbit turf, scrub and dense yew woodland. Car park at SU710935 off road between Watlington and Christmas Common. Two miles E of Watlington. Owned by the National Trust. Species seen here:

The inclosure consists largely of mature mixed woodland with open rides and damp meadow along the northern edge, close to the course of Avon Water. Both the rides and meadows are well stocked with nectar sources which attract butterflies. Managed by the Forestry Commission. Species seen here: